Malicious Code Injection in messi-urt-efsdsdus Package

messi-urt-efsdsdus Updated 26 Nov 2025

Summary

12/11/2025
CRITICAL
No i
Critical
Not published

MAL-2025-160397: Malicious code in messi-urt-efsdsdus (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The messi-urt-efsdsdus package is part of the npm ecosystem and is associated with the tea.xyz token reward campaign. This package is designed to facilitate the automatic generation and publication of derivative packages, which can inflate developer reputation scores. However, it has been identified as containing malicious code that compromises its integrity and the security of applications that depend on it.

Vulnerability Detail

The vulnerability arises from malicious code embedded within the messi-urt-efsdsdus package. This code modifies the package.json file to remove private flags, alters version numbers, and generates random package names, thereby polluting the npm registry. The origin of this issue is linked to the tea.xyz token reward campaign, which aims to manipulate npm's reputation system. The ramifications include potential security risks for applications using this package, as it can lead to unauthorized access and exploitation.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall messi-urt-efsdsdus

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, you can avoid using the messi-urt-efsdsdus package and look for alternative packages that provide similar functionality without the associated risks.

Conclusion

The messi-urt-efsdsdus package contains malicious code that poses significant security risks to applications using it. It is crucial to remove this package and monitor for any updates or patches. Utilizing tools like Vulert can help maintain the security of your software by providing real-time alerts for open-source vulnerabilities.

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FAQ

It is an npm package associated with the tea.xyz token reward campaign, designed to generate and publish derivative packages.

The malicious code modifies package.json files, removes private flags, and generates random package names to manipulate the npm registry.

You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Visit Vulert Scanner to check your application without any signup.

Using this package can expose your application to security vulnerabilities, including unauthorized access and exploitation due to the malicious code.

Regularly monitor your dependencies using tools like Vulert and keep your packages updated to mitigate the risk of vulnerabilities.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall messi-urt-efsdsdus

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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